/* ── Base & Utilities ── */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { overflow-x: hidden; }
  ::selection { background: #ff6b57; color: #fff; }

  /* ── Animations ── */
  @keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
  }
  @keyframes floatSlow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
  }
  .animate-float { animation: float 4s ease-in-out infinite; }
  .animate-float-slow { animation: floatSlow 5s ease-in-out infinite; }
  .animate-delay-100 { animation-delay: 0.1s; }
  .animate-delay-200 { animation-delay: 0.2s; }

  /* ── Scroll Reveal ── */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }

  /* ── Nav scroll state ── */
  #nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0,0,0,0.06);
  }
  #nav.scrolled .font-display { color: #1f1f23; }

  /* ── Mobile menu ── */
  #mobileMenu {
    animation: slideDown 0.25s ease;
  }
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* ── Custom scrollbar ── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #f7f7f8; }
  ::-webkit-scrollbar-thumb { background: #d4d4d8; border-radius: 999px; }
  ::-webkit-scrollbar-thumb:hover { background: #a1a1aa; }
</style>